Sash construction



Aug. 28, 1956 A, T. HAGERTY sAsH CONSTRUCTION 2 Sheets-Sheet l originalFile Jan. 26, 1951 IN VEN TOR.

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Aug. 28, 1956 A. T. HAGERTY sAsH CONSTRUCTION 2 Sheets-Sheet 2 OriginalFiled Jan. 26, 195] JNVENToR. dnafew Tfzcggerg,

Unite tates This invention relates to metal window constructions and ismore particularly concerned with improvements in a lire underwriterswindow.

This application is a division of application Serial No. 207,979 ledJanuary 26, 1951, now Patent No. 2,672,- 960, dated March 23, 1954.

It is a general object of the invention to provide a double sash windowwhich is fabricated of metal members assembled and connected together toprovide a rugged construction and which will withstand considerable heatwithout apreciable buckling or separation of the members.

It is a more specific object of the invention to provide a window ofmetal frame construction which when glazed with wire glass will besufficiently rugged to prevent a substantial blaze from penetrating thesame and which will not be penetrated by any substantial amount of waterfrom a conventional tire hose directed against it after it has beensubject to such a blaze for a predetermined length of time.

It is a further object of the invention to provide a metal windowconstruction formed of built up sections which are readily assembled andconnected together in a simple and e'cient manner and with a minimum ofmanufacturing equipment.

It is another object of the invention to provide in a window of the typedescribed having horizontal and/ or vertical muntins which muntins arefabricated from two plate sections, one of the sections being bent alongaxial lines to form a member which is T-shaped in cross section with themarginsA of the material forming the stem and with screw holes formed inthe stem by separating the walls thereof to provide a circular shape andspot welding on each side thereof, the holes so formed being threadedto. receive retaining screws which secure the other plate sectionthereto, which other section is bent along axial lines to provide amember having a central longitudinal recess therein for receiving amarginal portion ofthe stem of the T-shaped section and having sideflange portions cooperating with the top portions of the T-shapedsection tol form therewith glass receiving chanel formations or glazingrecesses.

It is another object of the invention to provide in a double sash Windowa meeting rail for the upper xed sash which is fabricated from two bentplate sections, one section being formed to provide an outer memberhaving a channel-like cross section with the margins of the platematerial extending downwardly and inwardly along the side walls thereofand terminating in inwardly directed spaced angeformations intermediatethe top and bottom edges of the side walls, and with the other platesection being formed to provide an inner member having a smaller channellike cross section with the margins of the material extending outwardlyof the ends of the side walls and adapted to be positioned in juxtaposedrelation with the inwardly directed marginal ange formations of theouter member and with clinched interlocking tongue and slot connectionsarranged therebetween to connect the members in assembled relation.

It is another object of the invention to provide a joint constructionbetween the ends of the stationary meeting rail and a jamb which will'allow the rail to expand with heat and still be anchored solidly to thejamb.

vatent 'ice It is a further object of the. invention to, provide a reunderwriters window which is economical to manufacture and which is alsosuiciently rugged to meet all the. rigid underwriters requirements.

These and other objects of the invention will be apparent from aconsideration of the window construction which is shown by way ofillustration in the accompanying drawings, wherein:

Fig. 1 is an elevation of a window construction embodying the principlesof the invention;

Fig. 2 is a vertical section taken generally on the line 2-2 of Fig. 1and to an enlarged scale;

Fig. 3 is a cross section of a horizontal muntin in assembtled conditionwith thev Section taken through one of the connecting screws;

Fig. 4 is a cross section similar to Fig. 3 at another point on themuntin;

Fig. 5 is an exploded perspective, view of the. members which form themuntin;

Fig. 6 is a transverse section through the bottom or meeting rail of thefixed sash;

Fig. 7 is a perspective view of a, length of the bottom or meeting rail;and

Fig. 8 is a section taken on the lines 8,-,8 of Fig, l showing the jointconstruction between the meeting rail and the jamb.

The window construction which isV illustrated in the `drawings isparticularly adapted for use where there are substantial fire hazardsand has embodied therein the principal features of the invention.

Referring to Fig. l, the illustrated window comprises a top sash 10 anda bottom sash 11, the top sash 10 being relatively xed with respect tothewindow frame and the bottom sash 11 being vertically movable relativethereto. The frame construction is characterized by side rails or jambmembers 12, a bottom sill 13 and a top cross mernber or header 14, Thevarious members of both the window frame and the sash f rarnesarelformed from metal plates or strips of relatively thin strong materialsuch as stainless steel. Each of the frame members is fabricated fromone or more plates by bending the plate material on lines extendingalong the longitudinal axis to form the desired structural crosssection.

The side and top members of the, upper xed sash i0 are formed as anintegral part of thefjambs A12 and top cross member 14 which constitutemain. members of the window frame. The upper sash 1.0 also includes ahor-i.- zontal muntin 15 Iand a bottom cross member or meeting rail 16.

Each jamb lMember 12 is shaped to provide vertically extending inner andouter face plates 1 7 and 18y and a connecting web divided into threeparallel offset vertical portions 19, 20 and 2.1 which face inwardly ofthe window Opening and Connecting portions 2.2 and 2.3 which areparallel with face plates 17 and 18 and, irl- .Spaced or other ,relationThe margins of the connecting web4 are integral with theface platesv 17and 15 or are joined thereto' albng lines intermediate the vertical sideledges, thereof.

The inner face plate 17 and web portions 19 and 22 form a verticalrecess for receiving a side guide channel 24 of U-shaped cross sectionwhich is secured therein in inwardly opening relation. The sidey guidechannel 24 receives the side edges of the movable sash 11v on whichthere is mounted a channel-shaped weather strip 25.

An inside strip v26 of angle formation is attached to the verticalportion 21 ofthe web of the jamb in spaced relation to the face plate 1SandV forms with the inner marginal portion of the face plate 18 arecessI or glazing channel for receiving the side edge. of the, panes ofglass 27 in the upper fixed sash 10.

The top cross member 14 of the window frame is formed to provide anupwardly opening channel-like sec tion with face plate forming inner andouter walt members 28 and 29 and an integral connecting web portion 30extending between the same. An inner strip 31 of angled section issecured to the web 39 in spaced relation to the outer face plate 29 andcooperates with the inner marginal portion of the face plate 29V toprovide a glazing channel for receiving the top edges of the glass p-ane27.

One or more muntins arranged horizontally (as shown in Fig. 1) orvertically (not shown) may be provided in either or both sash lil and11. The Inuntins are fabricated from two strip or plate members of thedesire length which are bent and connected together to form oppositelyopening glazing channels for receiving the edges of the panes 27 in thesash. Each of the muntins 15 comprises inner and outer members with theouter member formed by reversely bending portions of a plate strip alonglongitudinal lines to provide a T-shaped cross section with a stemportion 32 and a head portion 33 which extends laterally on oppositesides of the stern portion. The head portion 33 and stem portion 32 arethus characterized by two thicknesses of the plate material with theedges of the plate material terminating at or constituting the free edgeof the stem portion 32. At intervals along the length of the stemportion 32 the two margins of the plate material are separated to form acircular recess 34 which is internally threaded to receive a fasteningscrew 35. The stem portion 32 is preferably spot welded at 36 onopposite sides of each recess 34 to hold the plate material together.The inner member of the muntin is shaped to provide a centrallongitudinal- 1y extending recess 37 of channel-shaped cross section forreceiving the marginal edge of the stem portion 32 of the outer memberand laterally extending flange portions 38 at the sides of the recessforming portion. The flange portions 38 of the inner member are spacedfrom the top portion 33 of the outer member a snicient distance toprovide oppositely opening glazing recesses for receiving marginalportions of the glass panes 27. The inner and outer members are securedtogether in glass receiving position by means of the connecting screws35 which extend through suitable apertures in the inner member and arein screw-threaded engagement in the threaded holes 34.

The bottom or meeting rail 16 of the fixed sash 10 is fabricated fromtwo elongate plate members 0r strips which are bent to form outer andinner members di) and 41. The outer member 40 is formed to provide agenerally U-shaped channel section having outer side wail formingmembers 42 with the marginal edges of the plate material reversely bentwithin the channel and an edge portion thereof formed into inwardlyextending opposed flanged members 43 located intermediate the top andbottom edges of side Walls 42 and having a substantial space between theinner extremeties thereof. The ini ner member 41 which constitutes theinner portion of the rail 16 is formed to provide a generally U-shapedchannel section of somewhat smaller cross section than the outer member4i) and having side wall portions 44 terminating in outwardly directedflange portions 45 which are adapted to be placed in overlappingrelation with the inwardly extending anges 43 on the member 4b. Theflanges 43 are provided with slots 46 at spaced points along the lengthof the rail 16 and the ilanges 45 are provided with punched out tongues47 which in assembled relation extend through the slots 46 and areclinched to hold the inner and outer members in assembled relation withthe side walls thereof generally parallel and spaced to form an outerglazing recess for receiving the edge of the glass pane 27 and aparallel inner recess for receiving a downwardly extending outer llangedportion 49 on the top cross rail or meeting rail 50 of the lower sash11. The inner wall 42 of the meeting rail 16 is preferably provided atits upper edge with suitable weather stripping 51.

The meeting rail of the lower sash 11 is formed of one or more platemembers or strips bent to provide a hollow rail formation of rectangularcross section having an inner inwardly extending glazing recess 52 forreceiving the top edge of the glass pane 53 and a parallel downwardly orinwardly opening outer recess 54 which is formed between the downwardlyextending ange 49 and an outer wall for receiving the upwardlyprojecting portion of the side wall 42 on the meeting rail 16 to providea weather seal between the two meeting rails.

The meeting rail 16 (Figs. 2 and 8) is secured at its ends to the jambmembers 12 by means of a solid connecting block 55 of aluminum orsimilar material which is of generally T-shaped cross section with thestem forming portion S6 projecting upwardly into the recess 5? dened bythe top and side walls of the inner member d1 of the cross rail 16. Theblock 5S is close fitting but slidable within the hollow rail 16. It issecured to the vertical web portion 21 of the jaimb 12 by means of apair of screws 58. With this construction the meeting rail 16 is rigidlyconnected to the jamb members 12 while at the same time it is free toslide on the rigid blocks 55 upon expansion or contraction of the railin the lengthwise direction.

I claim:

l. In a double sash window construction which comprises a window framehaving a fixed sash at one end thereof and a bottom cross rail on theend of said sash, said cross rail being formed of plate members bent toprovide a hollow core at the end thereof, an end connecting block forsaid cross rail having a cross section corresponding to the crosssection of the hollow core of said cross rail and having a portion atone end thereof positioned in relatively close fitting slidable relationwithin said hollow core at the end of said cross rail, and fastenermembers rigidly securing the other end of said connecting block to anadjoining vertical portion of said window frame.

2. In a Ldouble sash window construction which comprises a window framehaving a fixed sash at the upper 'end thereof, said sash having a bottommeeting rail, said meeting rail being formed at the end thereof toprovide a hollow core of generally rectangular cross section, aconnecting member at the end of said meeting rail having a cross sectioncorresponding to the cross section of the hollow core of said meetingrail and having an end portion thereof positioned in relatively closefitting slid- `able relation in the hollow core at the end of saidmeeting rail, and means for securing the opposite end of said connectingmember in fixed relation to an adjoining vertical portion of said windowframe.

3. In a window construction which comprises a sash frame having verticalside members and a transversely extending meeting rail, which meetingrail is characterized by la plate structure having a generallyrectangular cross section and hollow open ends, which ends are arrangedwith their open faces confronting the inner faces of the vertical sideframe members, a connecting member for joining the ends of said meetingrail to the side frame members, said connecting member having anexternal cross section substantially the same as the internal crosssection of the meeting rail at the open ends thereof, said connectingmember being positioned in sliding telescoped engagement in an end ofsaid meeting rail, and means securing said connecting member in fixedrelation to the adjoining side frame member whereby to rigidly connectthe meeting rail to the vertical side frame member while permittinglimited movement thereof in the direction of the longitudinal axis ofsaid meeting rail.

